I don't know what elo you play on and maybe it doesn't matter, but I always have like 1/5 games where I solo que and someone is raging or literally afk trolling after pistol round or first gun round
Or someone reports you because you "baited" them on 1 round or something similar to that

Yeah it happens, 1 guy in my game last week literally trolled because some other guy in the team was arabic, the arab guy said nothing but the guy still went and knifed him the entire game so we lost 12-1 :D
Also I'm sure like 90% of the players don't even +rep anyone unless you ask them to, sometimes I can play 10 games and I only gain like +5 fbi or something in total